Rumors were running around the Internet claiming EA would release Skate It with a Balance Board add-on peripheral.  EA has gone on record saying:

“That’s something I haven’t heard. So… Our focus is just working with what is provided by Nintendo. So there’s not an extra piece. You know, it’s really about working with the Balance Board. So if you have one, this is another game you can play with it. It’s not about fitness, it’s about skateboarding and having fun.”

I think the Balance Board itself will be good enough for the skateboarding experience.  There might still be a chance of this happening and EA is playing games with us, but don’t expect to play Skate It with your friend’s Birdman deck anytime soon.